Turret tool-holder.



No. 897,576. PATENTED SEPT. 1, 1908. F. E. BOGORSELSKI.

TURRET TOOL HOLDER. APPLICATION FILED JUNE 20, 190B. 7

I I a t *o/ Egg WITNESSES.-

' x 75 y i INVENR, M

1 v ATTORNEY."

UNITED STATESPATENT ornion.

FRANK E. BQGORSELSKI, OF SPRINGFIELD, MASSACHUSETTS.

TURRET TOOL-HOLDER.

To all whom it may concern: Be it known that I, FRANK-.E. BOCOR- SELSKI,a citizen of the United States of America, and resident of Springfield,in the county of Hampden and State of Massachusetts, have inventedcertain new and useful Improvements in Turret Tool-Holders, of which thefollowing is a full, clear, and'exact description.

This invention relates to an im rovedholder for a plurality of tools inw iich'is comprised a tool-carrying head, a turret, a bar orholder,'adapted to be -inserted,-and rigidly confined, in the manner ofa single lathe tool, inthe tool-part of a lathe or like machine,-onwhich bar the turret head is rotatable, with certain special provisionsand constructions for the reception and confinement of the individualtools, for the confinement of the turret head on the holder bar, for aquick and rapid. substitution of one tool for another, or for thepresentation at the working point of any one of. the several tools, andfor enablin one to use the attachment either as a rig t or "left handmultiple tool in the lathe.

,The device comprises further constructions and arrangements for theattainment of other advantages which will be hereinafter renderedmanifest. I

The improved tool holder is illustrated in the. accompanying drawing,and the novel combinations and constructions of parts are described inconjunction therewithand defined in the claims.

In the drawings:Figure 1 is a partial edge view andpartial centrallongitudinal section through'the turret tool holder. Fig. 2 is a plan orview at right angles to Fig. 1. The section line 11, on Fig. 2 indicatesthe plane on which the sectional portion of Fig. 1

is drawn. Fig. 3 is a sectional view through the turret head on a planeat right angles to its axis and Fig. 4 is a artial sectional view astaken on line 44, ig. 2, for particularly illustrating structuralfeatures ail arrangements hereinafter referred to. Fig. 5 is a view ofthe component parts of the device in separated relations. r

Similar characters of reference indicate corres onding parts in all ofthe views.

In t 1e drawings,-A represents the holder bar which for the-greaterportion of its length is of straight and cross-sectionally rectangularform similar, to that of an ordinary Specification oi Letters Patent.Application filed .Tune 20, 1908. Serial No. 439,568.

as indicated by line 3-3, Fig. 1.

Patented Sept. 1, 1908.

simple and single lathe tool, whereby like the latter it may be insertedand rigidly confined in the tool post of a lathe. The forward endportion a of the holder bar is Widenedand of its opposite side andoutside of the orifices of the aperture 1) a multiplicity of radialserrations d.

B represents an annular member facewise supported on the rounded endportion 1) of the holder bar, being centered thereon by the stud C andconfined by the engagement of the enlarged flange like head f of thestud which by the exercise operates to bind the 'annular member orturret head firmly and immovably to the holder. The inner circular faceof the annular member B has radial serrations d for engagement in those(Z of the holder. The said annularmember is provided within its one faceportion which is opposite or most remote from its face which is .111engagement with the holder with aplurality of tool receiving grooves gwhich extend radially and in different directions from the centralaperture to the periphery; and in the present instance four of thesegrooves are provided,

one pair thereof being in alinement and at right angles to the alinedgrooves of the other pair. These grooves have a depth as represented inFigs. 1 and 4 sli htly less than the thickness or cross sectionaldimension of the similarly sized shanks of the various machine tools :0,the working ends of which pro-'- ject in different directions radiallyand outwardly beyond the annular member B. The said member B has screwholes h adjacent eachof the tool receiving grooves, parallel with theaxis of the member B and so that when the threaded shanks of the screws21 are screw engaged in the holes 'h their heads 71 overlie the marginsof the grooves and, haze individual-confinement 0n the toolswhichprotrude slightly beyond the face of the grooved member, as mostparticularly shown inFig.4.

The head or flangerlike enlargement f of the stud C which overlies theouter face of the annular inember'B has four holes number correspondingto that of the tools x and their individual confinin screws i, so thatwhen the parts are assem led and temporarily immovably confined theheads of the of the locking nut D- approximately circular form, it has acircular round hole-b therethrough and 1t has an area concentricallyaround on its surfaces at through it parallel with its axis, that is aconfining screws are accommodatedand env 5r resistance for the bindingeffect through the nstrumentality of the nut D; and, moreover, thescrews 1' may be separately or individually loosened for the removal orre placement of any one of the lathe'tools '13 represents a split springWasher surrounding an intermediate portion of the stud C and having its.location and interposition between the adjacent faces ofthe end portionof the holder bar A and the annular member B, and concentrically Withinthe circular areas of the serrations d and (Z This spring Washer iseffective When the nut D is loosened, preparatory to partially rotatingthe turret head, to axially move both such receiving grooves 9 w ereby adoubly long,

and double ended tool may be accommodated in and extend outwardly beyondan opposite pair of the receiving rooves g,-it bein' apparent that themidd e of the tool shan has its disposition through said aperture in thestud.

- This turret tool holder may beemployed either at a right or a left asWill be apparent from the dotted line indication in Fig. 1.

1. In a turret tool holder, in combination,

a holder-bar having a transverse aperture through its end portion, anannular member provided Within its one face portion Witha plurality ofdifferently radially extending tool receiving grooves opening tov theouter"- edge of such member, and having screw holes parallel Withitsaxis adjacent said] grooves, headed screws the threaded shanks of whichengage in said holes while edge portions of their heads overlie thegrooves for individual confinements of the tools in the grooves, a studhaving at one end an enlarged head provided with a plurality ofapertures at points outsidefifthe stud in which the heads of said"screws are, respectively accommodated, and 68 said stud having athreaded portion at its other end, and extended centrally through thesaid annular member and through the holder-bar aperture, and a bindingnut screwengaged on the threaded end portion of the stud and seatingagainst the end portion of the holder bar 2. In areversible turret toolholder, in combinatioma holder-bar having a transverse hole through itsend portion and havm ing its opposite face surrounding the ends of saidhole radially serrated, an annular mem ber provided Withinits one faceportion with a plurality of differently radiallyextending tool receivinggrooves all opening to the outer edge of such member, and having itsside opposite its grooves serrated, a stud,- having an enlargedjiead atone end and a, threaded portion at its other end, extended centrallythrough the said annular member and through the holder-har aperture, andbinding nut screw engaged on threaded end portion of the stud.

Signed by me at Springfield, Mass, in presence of two subscribingWitnesse FRANK n eocons rsni Witnesses:

WM. S. BELLoWs, G. R. DRISOOLL.

